Peter Boylan:
"We expect our martial arts teachers to be more perfect than we are, not just as martial artists, but as human beings as well, and all too often we are stunned when yudansha and teachers display familiar human shortcomings. Is it realistic to expect martial artists, even those who have been training for decades, to be above our human frailties? Not really. There isn't any sort of organized program for teaching personal and spiritual development within any of the martial arts, even those with the greatest reputations for it, Tai Chi Chuan and Aikido. The way practice in the martial arts is structured is for technical, not spiritual, development. 20 years of practicing nikkyo will give you a great nikkyo, but it won't necessarily make you a better person."
http://ejmas.com/tin/tinart_boylan_0201.htm